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    • 32. 发明授权
    • Expression of recombinant hemoglobin and hemoglobin variants in yeast
    • 酵母中重组血红蛋白和血红蛋白变体的表达
    • US06172039B2
    • 2001-01-09
    • US08463160
    • 1995-06-05
    • Joseph De AngeloNalini M. MotwaniWajeeh BajwaJoseph Bonaventura
    • Joseph De AngeloNalini M. MotwaniWajeeh BajwaJoseph Bonaventura
    • C07K14805
    • C12N15/81A61K38/00C07K14/805Y02A50/473
    • The invention is directed to a substantially pure mammalian globin chain or heme-binding fragment thereof. The invention is further directed to recombinant DNA vectors capable of expressing at least one globin chain or substantially homologous variant thereof in yeast. The invention also relates to methods for expressing at least one globin chain or substantially homologous variant thereof in yeast. Expressed alpha-like globin and beta-like globin chains or variants thereof may be combined with a source of heme to produce hemoglobin or a substantially homologous variant thereof. Additionally, expressed gamma-globin chains may be combined with a source of heme to produce hemoglobin or a substantially homologous variant thereof. The invention also relates to methods for expressing hemoglobin or variants thereof in yeast where the heme is produced by the yeast and ligated to globins to form hemoglobin in vivo. The hemoglobin produced by the methods of the present invention may be used in applications requiring a physiological oxygen carrier such as in blood substitute solutions and as in plasma expanders or in applications requiring a physiological oxygen carrier.
    • 本发明涉及基本上纯的哺乳动物球蛋白链或其血红素结合片段。 本发明还涉及能够在酵母中表达至少一种珠蛋白链或基本上同源的变体的重组DNA载体。 本发明还涉及用于在酵母中表达至少一种珠蛋白链或基本上同源的变体的方法。 表达的α样球蛋白和β样球蛋白链或其变体可以与血红素来源组合以产生血红蛋白或其基本上同源的变体。 此外,表达的γ-珠蛋白链可以与血红素来源组合以产生血红蛋白或其基本上同源的变体。 本发明还涉及在酵母中表达血红蛋白或其变体的方法,其中血红素由酵母产生并与球蛋白结合以在体内形成血红蛋白。 通过本发明的方法产生的血红蛋白可以用于需要生理氧载体的应用中,例如在血液替代溶液中,以及在等离子体扩张器中或在需要生理氧载体的应用中。